Found these two that the site said would fit my 93 GS... they look different, which one would fit perfectly?
http://www.denniskirk.com/jsp/product_catalog/Product.jsp?skuId=8006715&store=Main&catId=&productId=p80067&leafCatId=&mmyId=6097
http://www.denniskirk.com/jsp/product_catalog/Product.jsp?skuId=8008015&store=Main&catId=&productId=p80080&leafCatId=&mmyId=6097
http://www.denniskirk.com/jsp/product_catalog/Product.jsp?skuId=8008015&store=Main&catId=&productId=p80080&leafCatId=&mmyId=6097
that is the one you want, 95 and after have a shoulder on the sprocket. 94 and before dont
The one Jeremy said or a JTF565 will also fit 89-93 GS.
http://www.denniskirk.com/jsp/product_catalog/Product.jsp;jsessionid=MIFLLILXHHRT5LA0WTISM4VMDK0OWIV0?store=Main&skuId=8099315&mmy=#fitment
http://www.jtsprockets.com/52.0.html?&L=0&sel_uid=5460&p=
thanks guys, just ordered one. Pretty simple mod it seems.